Blue Light Anti Reflective Coating Glasses

Started 3 months ago | Questions thread
Billiam29 Senior Member • Posts: 1,834
Re: Anti Reflective Coating...

Mark H wrote:

Billiam29 wrote:

I’m not sure what you’re considering the “front” surface, but anti-reflective coating only needs to be applied to the interior surface of eyeglass lenses. The surface facing your eyes. For eyeglasses there’s really no functional purpose to having it applied to the “exterior” surface that faces away from your eyes.


The purpose of having anti-reflective coating on the front surface is to reduce the reflectivity of the spectacles to observers looking at the wearer.

For example, high refractive index materials (which enable thinner lenses) are increasingly 'reflective' - so this becomes a significant and undesirable issue.

So AR coating is partly about vision - and also, partly about 'appearance'.

I see your point and I definitely think it’s valid as appearance certainly is a large part of the overall eyeglass sales experience. To elaborate on my own perspective though, the appearance of eyeglasses to those that are not wearing the glasses isn’t a function of the anti-reflective coating. It’s a cosmetic side benefit. From my perspective keeping light from the extreme periphery and rearwards of the lenses from reflecting into the wearer’s eyes is the core functional purpose if anti-reflective coatings.

Now having said that, people commonly seem to spend absurd amounts of money for frames they think look nice while cheaping-out on the actual part of the glasses they look through with their eyeballs. So if anti-reflective coatings on both lens surfaces are pitched to make you “look nicer” that’s fine, but that’s marketing. From my perspective that line of reasoning would be somewhat analogous to saying the nice looking expensive frames are changing the functionality of what the eyeglass frames are for, which they don’t. They just look nicer.

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